Just bought the rifle fired 20 rounds of boxed ammo everything seemed great. I was getting .5 inch groups at 100 yards. The next time out at the range I noticed a delay when pulling the trigger and I had a couple rounds that didn't fire. After taking out the round we found that the firing pin made no contact with the primer. (I have not adjusted the accu-trigger) I took the gun home and cleaned it (including the bolt) went back to the range and now it has a delay. I pull the trigger and have a few 10ths of a second delay. This delay is driving me nuts! I've reassembled the bolt 5 times and it looks OK but I am still getting a delay.

Any ideas what might be causing this? I at first thought I had something sticking in the bolt but after cleaning and reassembling it over and over I don't see how the bolt could be causing the problem.

Thanks in advance for any help.